genus Arca
- noun
- /ˈdʒiːnəs ˈɑːrkə/
- Specialized
- The genus Arca consists of mollusks that are commonly known as ark shells.
Examples
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The genus Arca includes several species of ark shells found in warm seas.
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The genus Arca is notable for its distinctively ridged shells.
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Scientists have recently described a new member of the genus Arca from the Indo-Pacific region.
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The genus Arca includes various species of ark shells.
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Did you know that genus Arca is known for its unique shapes?
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Researchers study the genus Arca to understand the evolution of blood clams.
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Members of the genus Arca can often be found buried in sandy substrates along coastlines.
Synonyms
A sea animal like a clam with two strong box-shaped shells
Surface Forms
Morphology
The phrase denotes a taxonomic label formed compositionally from 'genus' (a biological rank) and 'Arca' (the name of that genus), so its meaning as 'the genus called Arca' is directly derivable from the constituents. This follows standard scientific naming conventions common across languages, making it transparent to a learner who knows both words.
Etymology
Genus Arca gets its name from the Latin word Arca, which means 'box' or 'chest'. The shells of these clams look like small boxes or tiny 'arks', so that picture explains why the group has this name today.